Acorus americanus (Raf.) Raf.
  • New Fl.
  • Sweet-flag, belle-angélique


Cite taxon page as 'WFO (2019): Acorus americanus (Raf.) Raf. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000349983. Accessed on: 08 Dec 2019'

General Information

Leaves basally white with pink or red, otherwise bright green; major veins 2--6, ± equally raised above leaf surface; cross section swollen in center, gradually tapering to ends. Vegetative leaves to 1.45 m; sheathing base (proximal part of leaf) 18.1--51.8(--58.8) cm; distal part of leaf 31.2--88.6(--100.4) ´ 0.3--1.2 cm, usually slightly longer to more than 2 times length of distal leaf, margins usually entire. Sympodial leaf (46--)56.8--148(--166.7) cm, usually equal to or slightly longer than vegetative leaves; sheathing base (20.9--)25.3--74.1(--100.2) cm; distal part of leaf (20.9--)27.9--77.9(--92.6) ´ 0.3--1.3 cm. Spadix 3.3--7.4(--8.7) cm ´ 4.7--10(--13.3) mm at anthesis; fruiting spadix 3.5--7.8(--8.8) cm ´ 6.9--18.2 mm. Flowers 2--3 mm; pollen grains usually deeply staining in aniline blue. Fruits obpyramidal, 4--6 mm. Seeds (1--)6(--14), tan, narrowly oblong to obovate, (2--)3--4 mm. 2n = 24.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 1
    • ]. 

    Literature

    Other References Browne, E. T. Jr. and R. Athey. 1992. Vascular Plants of Kentucky: An Annotated Checklist. Lexington, Ky. Duvall, M. R., G. H. Learn Jr., L. E. Eguiarte, and M. T. Clegg. 1993. Phylogenetic analysis of rbcL sequences identifies Acorus calamus as the primal extant monocotyledon. Proc. Natl. Acad. Sci. U.S.A. 90: 4641--4644. Gilmore, M. R. 1931. Dispersal by Indians a factor in the extension of discontinuous distribution of certain species of native plants. Pap. Michigan Acad. Sci. 13: 89--94. Ray, T. S. 1987. Leaf types in the Araceae. Amer. J. Bot. 74: 1359--1372. Röst, L. C. M. 1979. Biosystematic investigations with Acorus 4. Communication. A synthetic approach to the classification of the genus. Pl.anta Med. (Stuttgart) 37: 289--307. Wilson, K. A. 1960. The genera of the Arales in the southeastern United States. J. Arnold Arbor. 41: 47--72.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 1
    • ]. 

    Other Local Names

    NameLanguageCountry
    Sweet-flag, belle-angélique

     Information From

    Acoraceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Flora of North America Association